CITEL DLC Series – DIN Rail Surge Protection for Data and Telecom Lines
Type 2 SPD | 1-Pair Monobloc Design | GDT + TVS Technology | IEC 61643-21 Compliant
The CITEL DLC Series is a compact, high-performance Type 2 surge protection device (SPD) designed to safeguard data communication and signaling lines from transient overvoltages caused by lightning strikes and switching events. Engineered for DIN rail mounting, the DLC Series is ideal for integration into control panels and enclosures where space is at a premium.
Utilising a hybrid protection approach that combines Gas Discharge Tube (GDT) and Transient Voltage Suppression (TVS) diode technologies, the DLC Series offers both common-mode and differential-mode protection. This ensures the integrity of sensitive equipment connected to industrial buses, telecommunication lines, or signaling applications.
Key Features:
- 1-pair monobloc design for streamlined installation
- Hybrid GDT + TVS diode technology for comprehensive protection
- DIN rail mountable for easy integration into control panels
- Compact form factor (6 mm width) for high-density installations
- Spring terminal connections accommodating up to 2.5 mm² conductors
- Low insertion loss (<1 dB) preserving signal quality
- High surge handling capacity: Up to 20 kA (8/20 µs)
- Operating temperature range: -40°C to +85°C
- Ingress Protection: IP20 (NEMA 2)
- Compliance: IEC 61643-21 / EN 61643-21
Typical Applications:
- Protection of RS422/RS485 communication lines
- 4–20 mA current loops in industrial automation systems
- PLC I/O modules and remote sensing equipment
- Telecommunication lines in control and monitoring systems
- Data acquisition systems in harsh environments